Question 1

The critical angle is least in which of the following?

Accepted Answer

A) glass 
B) water 
C) diamond 
D) vacuum 
A) glass 
B) water 
C) diamond 
D) vacuum C

Question 2

Which of the following can be projected onto a viewing screen?

Accepted Answer

A) a real image 
B) a virtual image 
C) both 
D) neither 
A) a real image 
B) a virtual image 
C) both 
D) neither A

Question 3

Rainbows exist because light is

Accepted Answer

A) reflected. 
B) refracted. 
C) both of these 
D) neither of these 
A) reflected. 
B) refracted. 
C) both of these 
D) neither of these C

Question 4

At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of 15 degrees with the normal.Upon emerging,the beam angle will be

Accepted Answer

A) less than 15 degrees. 
B) 15 degrees. 
C) more than 15 degrees. 
D) impossible to predict. 
A) less than 15 degrees. 
B) 15 degrees. 
C) more than 15 degrees. 
D) impossible to predict.

Question 5

Optical fibers are now used by

Accepted Answer

A) surgeons. 
B) mechanics. 
C) engineers. 
D) all of these 
A) surgeons. 
B) mechanics. 
C) engineers. 
D) all of these

Question 6

The amount of light reflected from the front surface of a common windowpane is about

Accepted Answer

A) 4 percent. 
B) 8 percent. 
C) 40 percent. 
D) 92 percent. 
E) 96 percent. 
A) 4 percent. 
B) 8 percent. 
C) 40 percent. 
D) 92 percent. 
E) 96 percent.

Question 7

Atmospheric refraction makes the daylight hours a bit

Accepted Answer

A) longer. 
B) shorter. 
C) longer in summer but shorter in winter. 
A) longer. 
B) shorter. 
C) longer in summer but shorter in winter.

Question 8

When light passes through an ordinary window pane,its angle of emergence is

Accepted Answer

A) usually less than its angle of incidence. 
B) always less than its angle of incidence. 
C) the same as its angle of incidence. 
D) usually more than its angle of incidence. 
E) always more than its angle of incidence. 
A) usually less than its angle of incidence. 
B) always less than its angle of incidence. 
C) the same as its angle of incidence. 
D) usually more than its angle of incidence. 
E) always more than its angle of incidence.

Question 9

When taking a picture of a nearby object,your camera lens should be moved

Accepted Answer

A) closer than one focal length from the film. 
B) farther than one focal length from the film. 
C) to one focal length from the film. 
A) closer than one focal length from the film. 
B) farther than one focal length from the film. 
C) to one focal length from the film.

Question 10

Which of the following are consequences of light's traveling at different speeds in different media?

Accepted Answer

A) mirages 
B) rainbows 
C) internal reflection 
D) all of these 
E) none of these 
A) mirages 
B) rainbows 
C) internal reflection 
D) all of these 
E) none of these

Question 11

A "burning glass" used to concentrate sunlight in a tiny spot is a

Accepted Answer

A) converging lens. 
B) diverging lens. 
C) either 
D) neither 
A) converging lens. 
B) diverging lens. 
C) either 
D) neither

Question 12

When the pinhole in a pinhole camera is made larger,the image is

Accepted Answer

A) brighter. 
B) clearer. 
C) both 
D) neither 
A) brighter. 
B) clearer. 
C) both 
D) neither

Question 13

The shortest plane mirror in which you can see your entire image is

Accepted Answer

A) half your height. 
B) about 3/4 your height. 
C) about 1/3 your height. 
D) equal to your height. 
E) dependent on your distance from the mirror. 
A) half your height. 
B) about 3/4 your height. 
C) about 1/3 your height. 
D) equal to your height. 
E) dependent on your distance from the mirror.

Question 14

A yellow-white candle flame reflected from a piece of red glass shows two images;one from each surface.

Accepted Answer

A) Both images are yellow-white. 
B) One image is yellow-white and the other red. 
C) Both images are red. 
D) Both images are reddish yellow. 
A) Both images are yellow-white. 
B) One image is yellow-white and the other red. 
C) Both images are red. 
D) Both images are reddish yellow.

Question 15

It is difficult to see the roadway in front of you when you are driving on a rainy night mainly because

Accepted Answer

A) light scatters from raindrops and cuts down the light to reach your eyes. 
B) of added condensation on the inner surface of the windshield. 
C) the film of water on your windshield provides an additional reflecting surface. 
D) the film of water on the roadway makes the road less diffuse. 
E) none of these 
A) light scatters from raindrops and cuts down the light to reach your eyes. 
B) of added condensation on the inner surface of the windshield. 
C) the film of water on your windshield provides an additional reflecting surface. 
D) the film of water on the roadway makes the road less diffuse. 
E) none of these

Question 16

When you view a distant rainbow,each single water drop contributes to the bow

Accepted Answer

A) a single color. 
B) either low-,middle-,or high-frequency colors in most cases. 
C) all the colors of the rainbow. 
A) a single color. 
B) either low-,middle-,or high-frequency colors in most cases. 
C) all the colors of the rainbow.

Question 17

A fish outside water will see better if it has goggles that are

Accepted Answer

A) tinted blue. 
B) hemispheres. 
C) filled with water. 
D) extremely shiny. 
E) none of these 
A) tinted blue. 
B) hemispheres. 
C) filled with water. 
D) extremely shiny. 
E) none of these

Question 18

Chromatic aberration is a consequence of different colors in a lens having different

Accepted Answer

A) aberrations. 
B) frequencies. 
C) energies. 
D) critical angles. 
E) speeds. 
A) aberrations. 
B) frequencies. 
C) energies. 
D) critical angles. 
E) speeds.

Question 19

Standing at the shore of a still lake,the reflected view of scenery on the far side of the lake is the view you would see if you were upside down with your eye in the line of sight

Accepted Answer

A) where it already is. 
B) at the surface of the water where the light reflects. 
C) directly beneath you,as far below water level as you are above. 
D) close to the distant shore. 
E) none of these 
A) where it already is. 
B) at the surface of the water where the light reflects. 
C) directly beneath you,as far below water level as you are above. 
D) close to the distant shore. 
E) none of these

Question 20

Use the following figure to answer the question:  
-The sun's elliptical shape at sunset can be adequately explained by

Accepted Answer

A) Fermat's principle. 
B) the law of refraction. 
C) both of these 
D) none of these 
A) Fermat's principle. 
B) the law of refraction. 
C) both of these 
D) none of these

Exam 28: Reflection and Refraction

The critical angle is least in which of the following?

Which of the following can be projected onto a viewing screen?

Rainbows exist because light is

At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of 15 degrees with the normal.Upon emerging,the beam angle will be

Optical fibers are now used by

The amount of light reflected from the front surface of a common windowpane is about

Atmospheric refraction makes the daylight hours a bit

When light passes through an ordinary window pane,its angle of emergence is

When taking a picture of a nearby object,your camera lens should be moved

Which of the following are consequences of light's traveling at different speeds in different media?

A "burning glass" used to concentrate sunlight in a tiny spot is a

When the pinhole in a pinhole camera is made larger,the image is

The shortest plane mirror in which you can see your entire image is

A yellow-white candle flame reflected from a piece of red glass shows two images;one from each surface.

It is difficult to see the roadway in front of you when you are driving on a rainy night mainly because

When you view a distant rainbow,each single water drop contributes to the bow

A fish outside water will see better if it has goggles that are

Chromatic aberration is a consequence of different colors in a lens having different

Standing at the shore of a still lake,the reflected view of scenery on the far side of the lake is the view you would see if you were upside down with your eye in the line of sight

Use the following figure to answer the question: -The sun's elliptical shape at sunset can be adequately explained by

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